gallium: Change pipe->flush() interface to optionally return a fence.

The cell driver still uses an internal CELL_FLUSH_WAIT flag, in the long run
proper fencing should be implemented for it.

15 files changed, 44 insertions, 44 deletions

diff --git a/src/gallium/drivers/cell/ppu/cell_flush.c b/src/gallium/drivers/cell/ppu/cell_flush.c
index 66a5627d844..3aaf3de6684 100644
--- a/src/gallium/drivers/cell/ppu/cell_flush.c
+++ b/src/gallium/drivers/cell/ppu/cell_flush.c
@@ -35,12 +35,19 @@
 
 
 void
-cell_flush(struct pipe_context *pipe, unsigned flags)
+cell_flush(struct pipe_context *pipe, unsigned flags,
+           struct pipe_fence_handle **fence)
 {
    struct cell_context *cell = cell_context(pipe);
 
+   if (fence) {
+      *fence = NULL;
+      /* XXX: Implement real fencing */
+      flags |= CELL_FLUSH_WAIT;
+   }
+
    if (flags & PIPE_FLUSH_SWAPBUFFERS)
-      flags |= PIPE_FLUSH_WAIT;
+      flags |= CELL_FLUSH_WAIT;
 
    draw_flush( cell->draw );
    cell_flush_int(pipe, flags);
@@ -58,7 +65,7 @@ cell_flush_int(struct pipe_context *pipe, unsigned flags)
    ASSERT(!flushing);
    flushing = TRUE;
 
-   if (flags & PIPE_FLUSH_WAIT) {
+   if (flags & CELL_FLUSH_WAIT) {
       uint64_t *cmd = (uint64_t *) cell_batch_alloc(cell, sizeof(uint64_t));
       *cmd = CELL_CMD_FINISH;
    }
@@ -72,7 +79,7 @@ cell_flush_int(struct pipe_context *pipe, unsigned flags)
    }
 #endif
 
-   if (flags & PIPE_FLUSH_WAIT) {
+   if (flags & CELL_FLUSH_WAIT) {
       /* Wait for ack */
       for (i = 0; i < cell->num_spus; i++) {
          uint k = wait_mbox_message(cell_global.spe_contexts[i]);
diff --git a/src/gallium/drivers/cell/ppu/cell_flush.h b/src/gallium/drivers/cell/ppu/cell_flush.h
index 7f940ae76b6..8f0645c4293 100644
--- a/src/gallium/drivers/cell/ppu/cell_flush.h
+++ b/src/gallium/drivers/cell/ppu/cell_flush.h
@@ -29,8 +29,11 @@
 #ifndef CELL_FLUSH
 #define CELL_FLUSH
 
+#define CELL_FLUSH_WAIT 0x80000000
+
 extern void
-cell_flush(struct pipe_context *pipe, unsigned flags);
+cell_flush(struct pipe_context *pipe, unsigned flags,
+           struct pipe_fence_handle **fence);
 
 extern void
 cell_flush_int(struct pipe_context *pipe, unsigned flags);
diff --git a/src/gallium/drivers/cell/ppu/cell_vbuf.c b/src/gallium/drivers/cell/ppu/cell_vbuf.c
index cc727ff4edb..3a181b585c5 100644
--- a/src/gallium/drivers/cell/ppu/cell_vbuf.c
+++ b/src/gallium/drivers/cell/ppu/cell_vbuf.c
@@ -243,7 +243,7 @@ cell_vbuf_draw(struct vbuf_render *vbr,
 
 #if 0
    /* helpful for debug */
-   cell_flush_int(&cell->pipe, PIPE_FLUSH_WAIT);
+   cell_flush_int(&cell->pipe, CELL_FLUSH_WAIT);
 #endif
 }
 
diff --git a/src/gallium/drivers/cell/ppu/cell_vertex_shader.c b/src/gallium/drivers/cell/ppu/cell_vertex_shader.c
index f5c27852c14..b418857ccd8 100644
--- a/src/gallium/drivers/cell/ppu/cell_vertex_shader.c
+++ b/src/gallium/drivers/cell/ppu/cell_vertex_shader.c
@@ -133,7 +133,7 @@ cell_vertex_shader_queue_flush(struct draw_context *draw)
       vs->num_elts = n;
       send_mbox_message(cell_global.spe_contexts[0], CELL_CMD_VS_EXECUTE);
 
-      cell_flush_int(& cell->pipe, PIPE_FLUSH_WAIT);
+      cell_flush_int(& cell->pipe, CELL_FLUSH_WAIT);
    }
 
    draw->vs.post_nr = draw->vs.queue_nr;
diff --git a/src/gallium/drivers/failover/fo_context.c b/src/gallium/drivers/failover/fo_context.c
index afc0d7eb1ec..cb95ba516f9 100644
--- a/src/gallium/drivers/failover/fo_context.c
+++ b/src/gallium/drivers/failover/fo_context.c
@@ -69,7 +69,7 @@ static boolean failover_draw_elements( struct pipe_context *pipe,
 					start, 
 					count )) {
 
-	 failover->hw->flush( failover->hw, ~0 );
+	 failover->hw->flush( failover->hw, ~0, NULL );
 	 failover->mode = FO_SW;
       }
    }
@@ -92,7 +92,7 @@ static boolean failover_draw_elements( struct pipe_context *pipe,
        * intervening flush.  Unlikely to be much performance impact to
        * this:
        */
-      failover->sw->flush( failover->sw, ~0 );
+      failover->sw->flush( failover->sw, ~0, NULL );
    }
 
    return TRUE;
diff --git a/src/gallium/drivers/i915simple/i915_batch.h b/src/gallium/drivers/i915simple/i915_batch.h
index fb88cd6db0d..4ea06ce02bf 100644
--- a/src/gallium/drivers/i915simple/i915_batch.h
+++ b/src/gallium/drivers/i915simple/i915_batch.h
@@ -44,9 +44,9 @@
 
 #define ADVANCE_BATCH()
 
-#define FLUSH_BATCH() do { 				\
+#define FLUSH_BATCH(fence) do { 			\
    if (0) i915_dump_batchbuffer( i915 );		\
-   i915->winsys->batch_flush( i915->winsys );		\
+   i915->winsys->batch_flush( i915->winsys, fence );	\
    i915->batch_start = NULL;				\
    i915->hardware_dirty = ~0;				\
 } while (0)
diff --git a/src/gallium/drivers/i915simple/i915_blit.c b/src/gallium/drivers/i915simple/i915_blit.c
index db4671ff553..24449e3fb33 100644
--- a/src/gallium/drivers/i915simple/i915_blit.c
+++ b/src/gallium/drivers/i915simple/i915_blit.c
@@ -70,7 +70,7 @@ i915_fill_blit(struct i915_context *i915,
 
 
    if (!BEGIN_BATCH(6, 1)) {
-      FLUSH_BATCH();
+      FLUSH_BATCH(NULL);
       assert(BEGIN_BATCH(6, 1));
    }
    OUT_BATCH(CMD);
@@ -145,7 +145,7 @@ i915_copy_blit( struct i915_context *i915,
 
 
    if (!BEGIN_BATCH(8, 2)) {
-      FLUSH_BATCH();
+      FLUSH_BATCH(NULL);
       assert(BEGIN_BATCH(8, 2));
    }
    OUT_BATCH(CMD);
diff --git a/src/gallium/drivers/i915simple/i915_flush.c b/src/gallium/drivers/i915simple/i915_flush.c
index 96a54281f11..7d23e6b6b90 100644
--- a/src/gallium/drivers/i915simple/i915_flush.c
+++ b/src/gallium/drivers/i915simple/i915_flush.c
@@ -37,11 +37,9 @@
 #include "i915_batch.h"
 
 
-/**
- * In future we may want a fence-like interface instead of finish.
- */
 static void i915_flush( struct pipe_context *pipe,
-			unsigned flags )
+                        unsigned flags,
+                        struct pipe_fence_handle **fence )
 {
    struct i915_context *i915 = i915_context(pipe);
 
@@ -60,7 +58,7 @@ static void i915_flush( struct pipe_context *pipe,
 	 flush |= FLUSH_MAP_CACHE;
 
       if (!BEGIN_BATCH(1, 0)) {
-	 FLUSH_BATCH();
+	 FLUSH_BATCH(NULL);
 	 assert(BEGIN_BATCH(1, 0));
       }
       OUT_BATCH( flush );
@@ -69,11 +67,7 @@ static void i915_flush( struct pipe_context *pipe,
 
    /* If there are no flags, just flush pending commands to hardware:
     */
-   FLUSH_BATCH();
-
-   if (flags & PIPE_FLUSH_WAIT) {
-      i915->winsys->batch_finish(i915->winsys);
-   }
+   FLUSH_BATCH(fence);
 }
 
 
diff --git a/src/gallium/drivers/i915simple/i915_prim_emit.c b/src/gallium/drivers/i915simple/i915_prim_emit.c
index d8de5178f60..b6fb0a6d88f 100644
--- a/src/gallium/drivers/i915simple/i915_prim_emit.c
+++ b/src/gallium/drivers/i915simple/i915_prim_emit.c
@@ -140,7 +140,7 @@ emit_prim( struct draw_stage *stage,
    assert(vertex_size >= 12); /* never smaller than 12 bytes */
 
    if (!BEGIN_BATCH( 1 + nr * vertex_size / 4, 0 )) {
-      FLUSH_BATCH();
+      FLUSH_BATCH(NULL);
 
       /* Make sure state is re-emitted after a flush: 
        */
diff --git a/src/gallium/drivers/i915simple/i915_prim_vbuf.c b/src/gallium/drivers/i915simple/i915_prim_vbuf.c
index eb64f51943b..7fb2adbb53b 100644
--- a/src/gallium/drivers/i915simple/i915_prim_vbuf.c
+++ b/src/gallium/drivers/i915simple/i915_prim_vbuf.c
@@ -161,7 +161,7 @@ i915_vbuf_render_draw( struct vbuf_render *render,
       i915_emit_hardware_state( i915 );
 
    if (!BEGIN_BATCH( 1 + (nr_indices + 1)/2, 1 )) {
-      FLUSH_BATCH();
+      FLUSH_BATCH(NULL);
 
       /* Make sure state is re-emitted after a flush: 
        */
diff --git a/src/gallium/drivers/i915simple/i915_state_emit.c b/src/gallium/drivers/i915simple/i915_state_emit.c
index a7498d22b7e..6f947d43468 100644
--- a/src/gallium/drivers/i915simple/i915_state_emit.c
+++ b/src/gallium/drivers/i915simple/i915_state_emit.c
@@ -115,7 +115,7 @@ i915_emit_hardware_state(struct i915_context *i915 )
 #endif
    
    if(!BEGIN_BATCH(dwords, relocs)) {
-      FLUSH_BATCH();
+      FLUSH_BATCH(NULL);
       assert(BEGIN_BATCH(dwords, relocs));
    }
 
diff --git a/src/gallium/drivers/i915simple/i915_winsys.h b/src/gallium/drivers/i915simple/i915_winsys.h
index aea30032818..5e16543f4ec 100644
--- a/src/gallium/drivers/i915simple/i915_winsys.h
+++ b/src/gallium/drivers/i915simple/i915_winsys.h
@@ -56,6 +56,7 @@ extern "C" {
  */
 
 struct pipe_buffer;
+struct pipe_fence_handle;
 struct pipe_winsys;
 struct pipe_screen;
 
@@ -103,8 +104,8 @@ struct i915_winsys {
 			unsigned access_flags,
 			unsigned delta );
    
-   void (*batch_flush)( struct i915_winsys *sws );
-   void (*batch_finish)( struct i915_winsys *sws );
+   void (*batch_flush)( struct i915_winsys *sws,
+                        struct pipe_fence_handle **fence );
 };
 
 #define I915_BUFFER_ACCESS_WRITE   0x1 
diff --git a/src/gallium/drivers/i965simple/brw_flush.c b/src/gallium/drivers/i965simple/brw_flush.c
index 5216c680cf6..e6001c30d94 100644
--- a/src/gallium/drivers/i965simple/brw_flush.c
+++ b/src/gallium/drivers/i965simple/brw_flush.c
@@ -36,14 +36,11 @@
 #include "brw_batch.h"
 
 
-/**
- * In future we may want a fence-like interface instead of finish.
- */
 static void brw_flush( struct pipe_context *pipe,
-			unsigned flags )
+                       unsigned flags,
+                       struct pipe_fence_handle **fence )
 {
    struct brw_context *brw = brw_context(pipe);
-   struct pipe_fence_handle *fence;
 
    /* Do we need to emit an MI_FLUSH command to flush the hardware
     * caches?
@@ -65,11 +62,7 @@ static void brw_flush( struct pipe_context *pipe,
 
    /* If there are no flags, just flush pending commands to hardware:
     */
-   FLUSH_BATCH( &fence );
-
-   if (flags & PIPE_FLUSH_WAIT) {
-//      brw->winsys->wait_fence(brw->winsys, fence);
-   }
+   FLUSH_BATCH( fence );
 }
 
 
diff --git a/src/gallium/drivers/softpipe/sp_flush.c b/src/gallium/drivers/softpipe/sp_flush.c
index 2cbd0d7cabe..0625b69099b 100644
--- a/src/gallium/drivers/softpipe/sp_flush.c
+++ b/src/gallium/drivers/softpipe/sp_flush.c
@@ -40,13 +40,10 @@
 #include "sp_winsys.h"
 
 
-/* There will be actual work to do here.  In future we may want a
- * fence-like interface instead of finish, and perhaps flush will take
- * flags to indicate what type of flush is required.
- */
 void
 softpipe_flush( struct pipe_context *pipe,
-		unsigned flags )
+		unsigned flags,
+                struct pipe_fence_handle **fence )
 {
    struct softpipe_context *softpipe = softpipe_context(pipe);
    uint i;
@@ -72,5 +69,8 @@ softpipe_flush( struct pipe_context *pipe,
     * to unmap surfaces when flushing.
     */
    softpipe_unmap_surfaces(softpipe);
+
+   if (fence)
+      *fence = NULL;
 }
 
diff --git a/src/gallium/drivers/softpipe/sp_flush.h b/src/gallium/drivers/softpipe/sp_flush.h
index 34ec617866b..68d9b5fa835 100644
--- a/src/gallium/drivers/softpipe/sp_flush.h
+++ b/src/gallium/drivers/softpipe/sp_flush.h
@@ -29,7 +29,9 @@
 #define SP_FLUSH_H
 
 struct pipe_context;
+struct pipe_fence_handle;
 
-void softpipe_flush(struct pipe_context *pipe, unsigned flags );
+void softpipe_flush(struct pipe_context *pipe, unsigned flags,
+                    struct pipe_fence_handle **fence);
 
 #endif